Improvement in rabbeting-machine



`J. J. & T. CLARK.

RABBBTING MACHINE. i No. 93,519. l Patented Aug. 10, 1869.

- of frame A, by means oi' boxes E and lbearings thereof.

dem sata gaat aai-a.

JOHN J. CLARK AND THOMAS CLARK, OFELGIN, ILLINOIS.

.Letters Patent No. 93,519, datedVA/ug'ust 10, 1869.

The Schedule referred to in these Lettera Patentand making part of the same.

To all/whom rit mag/concern.-

Beit known that we, JOHN J. CLARK and THOMAS OLARK, of' Elgin, in thecounty of Kane, and State of Illinois, have invented anew and useful Improvement in Machinery for Rabbet-ing Door-Panels; andwe do device.

Similar letters of reference, where they occur in they separate figures, denote like parts in both of the drawings.

Y rlhe nature oi' our improvement consists in two r0- .tating cutters on a horizontal shaft, and so arranged as, .to admit'of lateral adjustment, or of being moved on said shaft, in the direction oi'it-s length, to any graduated distance, one from the other, the cuttngedges thereof coming in contact with and against opposite sides ofthe board as the same is forced 0r passes over the table, thus cutting away its outer edges, forining the rabbet on both sides of the panel at one operation, whereby a great saving of time and labor is obtained.

To enable others skilled in the art to construct and ,use our invention, we will 'proceed to describe the same with. reference to the drawings. l A

A represents the frame of' the'lnachine, which may be oi' woodor niet-al, and of any suitable form of construction.

B, themain or driving-shaft, which extends across from side to side ofthe trame.l

On said shaft is the main rhiving-wheel C, around.l

which passes belt D. v

Said belt. extends upward and around pulley C2 on shalt Bz, which is attached to the top or upper portion E", forming the On said shaft B2 are two disks, F and Ii, so arranged as yto be capable ot' lateral adjustment, or of being moved in the direction ofthe lengt-h of said shaft,^and

iirml y held thereon at any graduated distance, one from i the other, by means oi' set-screws, e and e.

Out through and across the outer rim of said disks are mortises or slots, 1 and 2, more or less, cut at right angles with the face of the disk.

Yithin said slots or mortises are cutter-blades, H- .and H2, firmly attached by means of screws or bolts,

f and f. The cutting-edges of the blades protrude outward from the face of thc disk, and are so arranged as to bring the edges of the blades in one disk toward the edges inthe other.

The objects of this style of cutters are several:

First, the blades may be so shaped as to work the shoulder of the rabbet in the form of a moulding, and by arranging the sameas described, the rabbet is worked 0n both sides ofthe panel at one operation.; and

Second, by making the saine adjustable, the rabbet can be worked to any desired depth, and on thick or thin material, as is often found necessary in manufacturing doors.

L, in the. drawings, represents the vtable or platform, which is hinged at one end to the end and top of the frame, and'so arranged as to allow the opposite end to have a vertical tilting movement, and is held at any proper adjusted height by means of screw N, which passes upward through the top of the iiame and against the bottom of the platform.

At or near the centre of the table is a guide, m, which v extends its entire length, and is also capable of being adjusted laterally, and held at any given distance from' disk F2, by means of screws l l. Y

Attached to Athe outerside of s'aiutable are standards U and U?, which receive a seltladjusting frame', P,

that extends toward the centre of the table and over disk F. Thecentre of said frame is bent upward, to admit of the movement, and is provided with spiral springs S S2, which pass around the same `iietween standards U U2 and the bent portion thereof, which brings frame l in contact -with or f frainst the panel, forcing Vthe saine `against guide lm', thus holding the panel iu a vertical position as it passes over the cutters which form the rabbet thereon, as is shown at a, iig. 2.-

Haviug thus described the nature and object of our invention,-

What we'claini as our invention, and desire to secure by Letters Patent, is- Y Thelaterally-adjustable cutter-heads F 1*", in comt binatiop with the hinged table L, curved spring frame P, and guide an., when all the parts are constructed and operated as described, for the purpose set forth.

, JOHN J. CLARK.

- THOMAS CLARK. Witnesses:

N. H. SHERBURN, S. D. WILDER.- 

